Title : Biosorption of iodine and reactive dye using a new low cost Ficus lyrata seed powder adsorbent Author : Surachai Karnjanakom, PhD Candidate Issue : Volume 2 (2015)Article ID : APC-2015-8 Abstract : A new adsorbent as a Ficus lyrata seed powder (FP) was applied for removal of iodine and reactive dyes in waste water model. FP was treated by chemicals with 10 %w/v HNO3 (FP-Treated by HNO3) and 10 %w/v KOH (FP-Treated by KOH). Specific surface area of adsorbent was quantified by adsorption of methylene blue together with using Langmuir isotherm. The result showed that specific surface area of FP-Treated by HNO3, FP-Treated by KOH and FP-Untreated were 19.42, 18.47 and 18.71 m2/g, respectively. The properties of adsorbent as adsorption capacities depended on the type of chemical agent and activated condition. Batch experiment of adsorption was carried out by different conditions as absorbent amount and dye concentration using iodine and reactive blue (RB) dye adsorbates. Adsorption data were modeled using the Langmuir and Freundlich isotherms by considering the correlation coefficient (R2). Adsorption kinetic data were verified using pseudo-first order and pseudo-second order. Kinetic studies showed that the adsorption followed the pseudo-second order reaction. Download article